Android获取系统cpu信息，内存，版本，电量等信息

1、CPU频率，CPU信息：/proc/cpuinfo和/proc/stat

通过读取文件/proc/cpuinfo系统CPU的类型等多种信息。

读取/proc/stat 所有CPU活动的信息来计算CPU使用率

下面我们就来讲讲如何通过代码来获取CPU频率：

package com.orange.cpu;

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStream;

public class CpuManager {

// 获取CPU最大频率（单位KHZ）

//"/system/bin/cat" 命令行

//"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存储最大频率的文件的路径

public static String getMaxCpuFreq() {

String result = "";

ProcessBuilder cmd;

try {

String[] args = { "/system/bin/cat",

"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" };

cmd = new ProcessBuilder(args);

Process process = cmd.start();

InputStream in = process.getInputStream();

byte[] re = new byte[24];

while (in.read(re) != -1) {

result = result + new String(re);

}

in.close();

} catch (IOException ex) {

ex.printStackTrace();

result = "N/A";

}

return result.trim();

}

// 获取CPU最小频率（单位KHZ）

public static String getMinCpuFreq() {

String result = "";

ProcessBuilder cmd;

try {

String[] args = { "/system/bin/cat",

"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq" };

cmd = new ProcessBuilder(args);

Process process = cmd.start();

InputStream in = process.getInputStream();

byte[] re = new byte[24];

while (in.read(re) != -1) {

result = result + new String(re);

}

in.close();

} catch (IOException ex) {

ex.printStackTrace();

result = "N/A";

}

return result.trim();

}

// 实时获取CPU当前频率（单位KHZ）

public static String getCurCpuFreq() {

String result = "N/A";

try {

FileReader fr = new FileReader(

"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");

BufferedReader br = new BufferedReader(fr);

String text = br.readLine();

result = text.trim();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return result;

}

// 获取CPU名字

public static String getCpuName() {

try {

FileReader fr = new FileReader("/proc/cpuinfo");

BufferedReader br = new BufferedReader(fr);

String text = br.readLine();

String[] array = text.split(":\\s+", 2);

for (int i = 0; i < array.length; i++) {

}

return array[1];

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

2、内存：/proc/meminfo

publicvoidgetTotalMemory(){Stringstr1="/proc/meminfo";Stringstr2="";try{FileReaderfr=newFileReader(str1);BufferedReaderlocalBufferedReader=newBufferedReader(fr,8192);while((str2=localBufferedReader.readLine())!=null){Log.i(TAG,"---"+str2);}}catch(IOExceptione){}}

3、Rom大小

publiclong[]getRomMemroy(){long[]romInfo=newlong[2];//TotalrommemoryromInfo[0]=getTotalInternalMemorySize();//AvailablerommemoryFilepath=Environment.getDataDirectory();StatFsstat=newStatFs(path.getPath());longblockSize=stat.getBlockSize();longavailableBlocks=stat.getAvailableBlocks();romInfo[1]=blockSize*availableBlocks;getVersion();returnromInfo;}publiclonggetTotalInternalMemorySize(){Filepath=Environment.getDataDirectory();StatFsstat=newStatFs(path.getPath());longblockSize=stat.getBlockSize();longtotalBlocks=stat.getBlockCount();returntotalBlocks*blockSize;}

4、sdCard大小

publiclong[]getSDCardMemory(){long[]sdCardInfo=newlong[2];Stringstate=Environment.getExternalStorageState();if(Environment.MEDIA_MOUNTED.equals(state)){FilesdcardDir=Environment.getExternalStorageDirectory();StatFssf=newStatFs(sdcardDir.getPath());longbSize=sf.getBlockSize();longbCount=sf.getBlockCount();longavailBlocks=sf.getAvailableBlocks();sdCardInfo[0]=bSize*bCount;//总大小sdCardInfo[1]=bSize*availBlocks;//可用大小}returnsdCardInfo;}

5、电池电量

private BroadcastReceiver batteryReceiver=new BroadcastReceiver(){          @Override          public void onReceive(Context context, Intent intent) {              int level = intent.getIntExtra("level", 0);              //  level加%就是当前电量了      }      };  registerReceiver(batteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

6、系统的版本信息

publicString[]getVersion(){String[]version={"null","null","null","null"};Stringstr1="/proc/version";Stringstr2;String[]arrayOfString;try{FileReaderlocalFileReader=newFileReader(str1);BufferedReaderlocalBufferedReader=newBufferedReader(localFileReader,8192);str2=localBufferedReader.readLine();arrayOfString=str2.split("\\s+");version[0]=arrayOfString[2];//KernelVersionlocalBufferedReader.close();}catch(IOExceptione){}version[1]=Build.VERSION.RELEASE;//firmwareversionversion[2]=Build.MODEL;//modelversion[3]=Build.DISPLAY;//systemversionreturnversion;}

7、mac地址和开机时间

publicString[]getOtherInfo(){String[]other={"null","null"};WifiManagerwifiManager=(WifiManager)mContext.getSystemService(Context.WIFI_SERVICE);WifiInfowifiInfo=wifiManager.getConnectionInfo();if(wifiInfo.getMacAddress()!=null){other[0]=wifiInfo.getMacAddress();}else{other[0]="Fail";}other[1]=getTimes();returnother;}privateStringgetTimes(){longut=SystemClock.elapsedRealtime()/1000;if(ut==0){ut=1;}intm=(int)((ut/60)%60);inth=(int)((ut/3600));returnh+""+mContext.getString(R.string.info_times_hour)+m+""+mContext.getString(R.string.info_times_minute);}

部分内容转载自：

http://gqdy365.iteye.com/blog/1066113

http://blog.csdn.net/chuxing/article/details/7571547

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